package profiles.presentation.viewmodel

import android.net.Uri
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import dagger.hilt.android.lifecycle.HiltViewModel
import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.StateFlow
import kotlinx.coroutines.flow.asStateFlow
import kotlinx.coroutines.launch
import profiles.data.remote.dto.ProfileDto
import profiles.domain.repository.ProfileRepository
import javax.inject.Inject

data class ProfileState(
    val profile: ProfileDto? = null,
    val isLoading: Boolean = false,
    val error: String? = null,
    val isSaving: Boolean = false
)

@HiltViewModel
class ProfileViewModel @Inject constructor(
    private val repository: ProfileRepository
) : ViewModel() {

    private val _state = MutableStateFlow(ProfileState())
    val state: StateFlow<ProfileState> = _state.asStateFlow()

    fun loadProfile(id: String? = null) {
        viewModelScope.launch {
            _state.value = _state.value.copy(isLoading = true)
            val result = if (id == null) {
                repository.getMyProfile()
            } else {
                repository.getProfile(id)
            }
            
            result.onSuccess { profile ->
                _state.value = _state.value.copy(profile = profile, isLoading = false)
            }.onFailure { error ->
                _state.value = _state.value.copy(error = error.message, isLoading = false)
            }
        }
    }

    fun updateProfile(displayName: String?, bio: String?, avatarUri: Uri? = null) {
        viewModelScope.launch {
            _state.value = _state.value.copy(isSaving = true)
            
            // 1. Обновляем аватар, если он выбран
            avatarUri?.let {
                repository.uploadAvatar(it)
            }

            // 2. Обновляем текстовые данные
            repository.updateProfile(displayName, bio)
                .onSuccess { updatedProfile ->
                    _state.value = _state.value.copy(profile = updatedProfile, isSaving = false)
                }
                .onFailure { error ->
                    _state.value = _state.value.copy(error = error.message, isSaving = false)
                }
        }
    }

    fun removeAvatar() {
        viewModelScope.launch {
            repository.removeAvatar().onSuccess { updatedProfile ->
                _state.value = _state.value.copy(profile = updatedProfile)
            }
        }
    }
}